1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include <string.h>
#include <platform.h>
#include <rpmb.h>
#include <km_main.h>
#include <rpmb_listener.h>
#include <mmc_sdhci.h>
#include <boot_device.h>
#include <debug.h>
#include <target.h>
#include <secapp_loader.h>
static void *dev;
struct rpmb_init_info info;
int rpmb_init()
{
int ret = 0;
dev = target_mmc_device();
/* 1. Initialize storage specific data */
if (platform_boot_dev_isemmc())
{
struct mmc_device *mmc_dev = (struct mmc_device *) dev;
info.size = mmc_dev->card.rpmb_size / RPMB_MIN_BLK_SZ;
if (mmc_dev->card.ext_csd[MMC_EXT_CSD_REV] < 8)
{
dprintf(SPEW, "EMMC Version < 5.1\n");
info.rel_wr_count = mmc_dev->card.rel_wr_count;
}
else
{
if (mmc_dev->card.ext_csd[MMC_EXT_CSD_EN_RPMB_REL_WR] == 0)
{
dprintf(SPEW, "EMMC Version >= 5.1 EN_RPMB_REL_WR = 0\n");
// according to emmc version 5.1 and above if EN_RPMB_REL_WR in extended
// csd is not set the maximum number of frames that can be reliably written
// to emmc would be 2
info.rel_wr_count = 2;
}
else
{
dprintf(SPEW, "EMMC Version >= 5.1 EN_RPMB_REL_WR = 1\n");
// according to emmc version 5.1 and above if EN_RPMB_REL_WR in extended
// csd is set the maximum number of frames that can be reliably written
// to emmc would be 32
info.rel_wr_count = 32;
}
}
info.dev_type = EMMC_RPMB;
}
#ifdef UFS_SUPPORT
else
{
struct ufs_dev *ufs_dev = (struct ufs_dev *) dev;
ufs_rpmb_init(ufs_dev);
info.size = ufs_dev->rpmb_num_blocks;
info.rel_wr_count = ufs_dev->rpmb_rw_size;
info.dev_type = UFS_RPMB;
}
#endif
/* Register & start the listener */
ret = rpmb_listener_start();
if (ret < 0)
{
dprintf(CRITICAL, "Error registering the handler\n");
goto err;
}
err:
return ret;
}
struct rpmb_init_info *rpmb_get_init_info()
{
return &info;
}
int rpmb_read(uint32_t *req, uint32_t req_len, uint32_t *resp, uint32_t *resp_len)
{
int ret = 0;
if (platform_boot_dev_isemmc())
ret = rpmb_read_emmc(dev, req, req_len, resp, resp_len);
#ifdef UFS_SUPPORT
else
ret = rpmb_read_ufs(dev, req, req_len, resp, resp_len);
#endif
return ret;
}
int rpmb_write(uint32_t *req, uint32_t req_len, uint32_t rel_wr_count, uint32_t *resp, uint32_t *resp_len)
{
int ret = 0;
if (platform_boot_dev_isemmc())
ret = rpmb_write_emmc(dev, req, req_len, rel_wr_count, resp, resp_len);
#ifdef UFS_SUPPORT
else
ret = rpmb_write_ufs(dev, req, req_len, rel_wr_count, resp, resp_len);
#endif
return ret;
}
/* This API calls into TZ app to read device_info */
int read_device_info_rpmb(void *info, uint32_t sz)
{
int ret = 0;
struct send_cmd_req read_req = {0};
struct send_cmd_rsp read_rsp = {0};
read_req.cmd_id = KEYMASTER_READ_LK_DEVICE_STATE;
read_req.data = (uint32_t) info;
read_req.len = sz;
/* Read the device info */
arch_clean_invalidate_cache_range((addr_t) info, sz);
ret = qseecom_send_command(get_secapp_handle(), (void*) &read_req, sizeof(read_req), (void*) &read_rsp, sizeof(read_rsp));
arch_invalidate_cache_range((addr_t) info, sz);
if (ret < 0 || read_rsp.status < 0)
{
dprintf(CRITICAL, "Reading device info failed: Error: %d\n", read_rsp.status);
return -1;
}
return 0;
}
int write_device_info_rpmb(void *info, uint32_t sz)
{
int ret = 0;
struct send_cmd_req write_req = {0};
struct send_cmd_rsp write_rsp = {0};
write_req.cmd_id = KEYMASTER_WRITE_LK_DEVICE_STATE;
write_req.data = (uint32_t) info;
write_req.len = sz;
/* Write the device info */
arch_clean_invalidate_cache_range((addr_t) info, sz);
ret = qseecom_send_command(get_secapp_handle(), (void *)&write_req, sizeof(write_req), (void *)&write_rsp, sizeof(write_rsp));
arch_invalidate_cache_range((addr_t) info, sz);
if (ret < 0 || write_rsp.status < 0)
{
dprintf(CRITICAL, "Writing device info failed: Error: %d\n", write_rsp.status);
return -1;
}
return 0;
}
/*
* SWP Write function is used to send a configuration block to rpmb
* for enabling a secure write protect based on LBAs. This function
* should is enabled by the keymaster secure app and this function
* can only be called before we send the milestone call to keymaster.
*/
int swp_write(qsee_stor_secure_wp_info_t swp_cb)
{
secure_write_prot_req_t *req;
secure_write_prot_rsp_t rsp;
int ret = 0;
uint32_t tlen = sizeof(secure_write_prot_req_t) + sizeof(swp_cb);
if(!(req = (secure_write_prot_req_t *) malloc(tlen)))
ASSERT(0);
void *cpy_ptr = (uint8_t *) req + sizeof(secure_write_prot_req_t);
req->cmd_id = KEYMASTER_SECURE_WRITE_PROTECT;
req->op = SWP_WRITE_CONFIG;
req->swp_write_data_offset = sizeof(secure_write_prot_req_t);
req->swp_write_data_len = sizeof(swp_cb);
memcpy(cpy_ptr, (void *)&swp_cb, sizeof(swp_cb));
ret = qseecom_send_command(get_secapp_handle(), (void *)req, tlen, (void *)&rsp, sizeof(rsp));
if(ret < 0 || rsp.status < 0)
{
dprintf(CRITICAL, "Setting secure write protect configuration failed\n");
return -1;
}
return 0;
}
int rpmb_uninit()
{
int ret = 0;
ret = rpmb_listener_stop(RPMB_LSTNR_ID);
if (ret < 0)
{
dprintf(CRITICAL, "Failed to stop Qseecom Listener\n");
return ret;
}
ret = qseecom_exit();
if (ret < 0)
{
dprintf(CRITICAL, "Failed to exit qseecom \n");
return ret;
}
return ret;
}
|
